Optional Integer. Specifies a scope for selecting user names in a user field on an item form. If the value is 0, there is ...

Optional Integer. Specifies a scope for selecting user names in a user field on an item form. If the value is 0, there is no restriction to a SharePoint group. If the value is greater than 0, user selection is restricted to members of the SharePoint group whose ID equals the value that is specified.